1. Before we passed the exam, we had worked very hard for it.
2. After my sister had considered what to say, she talk to her headmaster.
3. Before I went out for a walk, I had learned my lessons.
4. After her brother had checked the prices, he bought a new washing machine.
5. Before my mother felt a little better, she had taken an aspirin.
6. After the boys had argued, they fought.
7. Before his aunt had an accident, she had gone out to a food store.
8. After we decided to go on a trip to Hue, we had had some problems.
9. Before the students wrote their assignments, they had read some materials.
10. After he had watched a football match, he wrote a report.
Bạn phải sửa lại như này nha.
